The kind of man who demands that government enforce his ideas is always the kind whose ideas are idiotic.

The final test of truth is ridicule. Very few dogmas have ever faced it and survived.

The truth is that Christian theology, like every other theology, is not only opposed to the scientific spirit; it is also opposed to all other attempts at rational thinking.

Here is tragedy - and here is America. For the curse of the country, as well of all democracies, is precisely the fact that it treats its best men as enemies. The aim of our society, if it may be said to have an aim, is to iron them out. The ideal American, in the public sense, is a respectable vacuum.

Time is a great legalizer, even in the field of morals

Absence is the dark-room in which lovers develop negatives.

I believe that no discovery of fact, however trivial, can be wholly useless to the race, and that no trumpeting of falsehood, however virtuous in intent, can be anything but vicious.